mm Meaning in the Cambridge English Dictionary
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Meaning of “mm” in the English Dictionary

"mm" in British English

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mm

(plural mm)
written abbreviation for millimetre : a 6 mm (​diameter) ​drill
(Definition of mm from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"mm" in American English

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mmnoun [C]

(plural mm)
abbreviation for millimeter
(Definition of mm from the Cambridge Academic Content Dictionary © Cambridge University Press)

"MM" in Business English

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MMnoun

uk   us  
STOCK MARKET written abbreviation for market-maker : Are the MM ​netbuyers or ​netsellers?

mmnoun [C]

uk   us   (plural mm)
MEASURES written abbreviation for millimetre (= a ​unit of length ​equal to 0.001 ​metres): It ​measures 119 mm in length by 63 mm in width by 13 mm ​deep.
(Definition of MM from the Cambridge Business English Dictionary © Cambridge University Press)
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